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The main advantage is that one can use generic type parameters to create classes and methods that can be used without incurring the cost of runtime casts or boxing operations, as shown here: [16] // Declare the generic class. public class GenericList < T > { void Add ( T input ) { } } class TestGenericList { private class ExampleClass ...
When implementing multiple interfaces that contain a method with the same name and taking parameters of the same type in the same order (i.e. the same signature), similar to Java, C# allows both a single method to cover all interfaces and if necessary specific methods for each interface.
Any C# class can therefore intercept dynamic calls on its instances by implementing IDynamicMetaObjectProvider. In case of dynamic method and indexer calls, overload resolution happens at run-time according to the actual types of the values passed as arguments, but otherwise according to the usual C# overloading resolution rules.
An extension method must be defined in a static class. An extension method must be defined as a static method. An extension method's first parameter must take the following form, where type is the name of the type to be extended: this type parameterName; An extension method may optionally define other parameters to follow the this parameter.
As a precursor to the lambda functions introduced in C# 3.0, C#2.0 added anonymous delegates. These provide closure-like functionality to C#. [3] Code inside the body of an anonymous delegate has full read/write access to local variables, method parameters, and class members in scope of the delegate, excepting out and ref parameters.
methods constructor «importing parameter = argument» method constructor. instructions endmethod. ... C# x.method(parameters) Java — D x.property: Python Visual ...
In C#, class methods, indexers, properties and events can all be overridden. Non-virtual or static methods cannot be overridden. The overridden base method must be virtual, abstract, or override. In addition to the modifiers that are used for method overriding, C# allows the hiding of an inherited property or method.
Method overloading, on the other hand, refers to differentiating the code used to handle a message based on the parameters of the method. If one views the receiving object as the first parameter in any method then overriding is just a special case of overloading where the selection is based only on the first argument.